Taiyo Kisokogyo Co.,Ltd. engages in the civil engineering business in Japan. It operates through six segments: Special Civil Engineering Work, Housing-Related Construction Business, Environmental Construction Business, Construction Business, Machinery Manufacturing and Sales Business, and Renewable Business. The company engages in housing correction work; building construction and renovation business; manufacture and sale of construction machinery; and sale of solar power generation and renewable energy. The company undertakes underground special civil engineering work, such as underground continuous walls, underground obstacle removal; and ground improvement and pipeline work in various fields, including general civil works, such as water and sewage, electric and gas pipelines, and rivers and roads, as well as construction works. It is also involved in the soil pollution purification, underground heat utilization, and urban redevelopment activities. The company was founded in 1958 and is headquartered in Nagoya, Japan.